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Scientists
Math
Sig. Figs.
Naming Compounds
Terms
100
He and his students discovered a dense central core with a positive charge using what is know as the gold foil experiment. This central core would later be called the nucleus.
Who is Rutherford?
100
Given that a neutral isotope of Fluorine has a mass number of 21 and an atomic number of 9, how many protons, neutrons, and electrons does it contain?
#p=9 #n=12 #e=9
100
3.45+5.6=
9.1
100
Name this compound S3O5
Trisulfur pentoxide
100
These elements do not conduct heat or electricity "well" and are usually found on the right side of the periodic table.
What are nonmetals.
200
He created the "chocolate chip" theory of the atom.
Who is Thomson?
200
What is 567 K in degrees Celsius?
294 degrees Celsius
200
Are conversion factors (1 in=2.54 cm, 1 kg=1000g) exact or inexact numbers (in other words, do you have to worry about their sig figs?)
They are exact numbers, so you do not need to count their sig figs when calculating the number of sig figs in your final answer.
200
Name this compound CCl4
Carbon tetrachloride
200
These are the columns of the periodic table.
What are groups?
300
He characterized neutrons, which are the neutral subatomic particles.
Who is Chadwick?
300
What is the power of ten and the symbol for "mega"?
10^6, M
300
How many sig figs are in the number 405.367?
6
300
What is the chemical formula for Iron (II) Oxide
FeO
300
Give an example of an intensive property of matter.
Answers may vary
400
He found the charge of the electron using the oil drop experiment.
Who is Millikan?
400
How many L are in 50.0 dL^3 (deciliters cubed)
0.0500 L^3 (Liters cubed)
400
How many sig figs are in the number 4.5000000?
8
400
What is the chemical formula for copper (II) sulfate?
CuSO4
400
This type of formula shows the lowest whole number ratio of the elements involved.
What is the empirical formula?
500
He discovered x-rays.
Who is Rontgen?
500
A student looked up the naturally occurring isotopes of sulfur and found the following information: 32S has a natural abundance of 95.04% and a mass of 31.97207 amu 33S has a natural abundance of 0.75% and a mass of 32.97146 amu 34S has a natural abundance of 4.20% and a mass of 33.96787 amu 36S has a natural abundance of 0.010% and a mass of 35.96708 amu What is the average atomic mass of sulfur?
32.07
500
0.00456 X 3.4521 =
0.0157
500
Name this compound CoCl2•6H2O
Cobalt(II) chloride hexahydrate
500
This is when matter goes from a gas to a solid.
Deposition